Liquid heating means



March 24, 1936. Q W K ET AL 2,035,260

LIQUID HEATING MEANS Filed Aug. 18, 1935 6 Sheets-Sheet 1 INVENfORS BY W MK. 24

March 24, 1936.

L. s. CHADWI'CK ET' AL LIQUID HEATING MEANS Filed Aug. 18, 1953 6 SheetsSheet 2 INVENTOR5.

W M 11:6 &?w-lw9 ATTORNEY.)

March 24, Li s CHADWICK ET A LIQUID HEATING MEANS Filed Aug. 18, 1 933 6 Sheets-Sheet 3 MLM kw ATTORNEYJS.

March 24, 1 3 L. s. CHADWICK ET AL LIQUID HEATING MEANS Filed Aug. 18, 1935 w, W MM ATTORNEYJ.

March 24, 1936. 5 CHADWICK AL 2,035,260

. LIQUID HEATING MEANS Filed Aug. 18, 1955 6 Sheets-Sheet 6 r/ IIlIIIl/l/I II/III/IIII/I/IIII INVENTORS, i-LL 2. 29W

29W Han/Lu 1W M'AAM ATTORNEYS.

Patented Mar. 24, 1936 UNITED STATES PATENT OFFICE LIQUID HEATING MEANS Ohio Application August 18, 1933, Serial No. 685,736

24 Claims.

This invention relates, generally, to liquid heating and storagemeans and is characterized by the transmission of heat by conduction from the zone of intense heat of a combustion device to a body of liquid remote from said zone.

The invention is peculiarly adapted for use as water heating and storage means in oil burning cook stoves, in which connection it is herein illustrated, but without any intention of so limiting it; and it may be said to resemble, in manner of use and general appearance, though not in principle, reservoirs that are built into certain well known types of wood or coal burning stoves or ranges and from which water may be dipped through an open top normally closed by a hinged cover.

Among the objects of the invention is the provision of relatively simple means by which heat may be effectively conducted from the zone of intense heat of a combustion device, as from the products of combustion of an oil burner, to the contents of a reservoir that is situated beyond said zone of intense heat, which means, being devoid of any circulating element, is readily adapted to incorporation in oil burning cook stoves or the like, and will not interfere with the convenient handling, nor appreciably affect the efiiciency, of the combustion device or burner.

Other objects and advantages will appear as we proceed to describe the embodiments of the invention illustrated in the accompanying drawings wherein Fig. 1 is a fragmentary front elevation, and Fig. 2 a similar plan View, of an oil burning cook stove incorporating our improvements; Fig. 3 is a vertical transverse section through the structure in offset planes, as indicated generally by the line 33 of Fig. 2, the branch of the heat conducting element being shown in elevation while the reservoir supporting parts are shown in section; Fig. 4 is a section on the lines 44 of Figs. 2 and 3; Fig. 5 is an elevational view of the liquid heating and storage means detached from the stove and revealing the side normally adjacent the stove; Fig. 6 is a sectional plan on the line 65 of Fig. 5; Fig. 7 is a detail of the member connecting the top of the reservoir or reservoir casing to the adjacent end of the stove top; Fig. 8 is a perspective view of the heat conducting element employed in the form of the invention illustrated in the preceding views; Fig. 9 is a fragmentary sectional front elevation of a stove incorporating a modified form of the invention; Fig. 10 is a perspective view of the heat conducting element used in the embodiment shown in Fig. 9; Fig. 11 is a view similar to Fig. 9 showing a form of the invention in which a plurality of heat conducting elements are connected to the stove top and transmit heat therefrom to the contents of the reservoir; Fig. 12 is a section on the line l2l2 of Fig. 11; and

Fig. 13 shows a further modification in which a single element or plate is substitutedfor the plurality of elements or bars of the preceding form.

In the embodiment of the invention illustrated in Figs. 1 to 8, the heat transmitting element, designated generally by the reference numeral l, consists of a relatively heavy bar of copper or other effective heat conducting material, that is preferably circular in cross section, the same being formed, throughout its central portion, to provide an open ring that may be referred to as the heat absorbing end 2 of the element, and, at its ends, to effect parallel branches .3 that may be termed the heat delivery end of the element, said heat absorbing and delivery ends being shown as at right angles to each other and connected together by inclined portions 4.

The heat absorbing end 2 of the element l is disposed below a solid or cast metal section 5 of a composite stove top 6, slightly beyond the edge of an opening I therein, which opening is adapted to be normally closed by a lid 8. The heat absorbing end of said element is thus disposed in operative relation to an oil burner, designated generally by the reference numeral 10, that is supported by and communicatively connected to a liquid fuel supply pipe IL This supply pipe is sustained, as by suitable means designated l2, within the stove structure; and said structure includes a base l3, along with the usual end panels and legs, one of the former being shown at It and one of the legs at l5, the end panel having an opening through which the portions 4 of the heat transmitting element I extend.

What has previously been referred to as the composite stove top 6 includes, besides, the solid section 5, a grid ll which, with the solid section, rests upon a depressed shoulder or seat I8 of an open sheet metal frame that constitutes the edge portion of the stove top, the same being formed with a relatively deep peripheral flange Zll having its lower edge turned inwardly.

A reservoir casing, designated generally by the reference numeral 25, is made up of sheet metal parts including a top 26, a side wall 21, and front and rear end walls 28 and 29, respectively, said side and end walls being preferably formed of a single piece of sheet metal, the lower edges of said walls being flanged inwardly, as indicated at 30, while the vertical edges of the'end' walls remote from the side wall 21 are turned toward each other, as best shown at 3| in Figs. 5 and 6.

The top 25 is made with a rectangular opening 33 that is surrounded by a depressed seat 34 on which a flanged cover 35 is adapted to rest, said cover being connected at one end, preferably detachably so, to the top 26, by hinge members 36, the inner ends of which play through openings 31 in a widened portion ofthe seat 34 and from which openings said ends may be withdrawn. The end of the top 26 remote from said hinges is provided with a depression 38 to facilitate engaging an object beneath the adjacent end of the cover 35 for the purpose of lifting the cover.

Enclosed by the casing 25 is a box like reservoir 40 having an open top surrounded by an inwardly directed flange 4I that is adapted to be engaged with the underside of the casing top 26 about the depressed seat 34. The side wall of the reservoir 40 adjacent the open side of the casing 25 is offset outwardly approximately midway from top to bottom, forming a horizontal wall 42 having openings through which the branches 3 that constitute the heat delivery end of the element I project downwardly into the tank 40 to a point adjacent the bottom thereof where said branches are engaged within holes in a member 43. Where said branches project through the horizontal wall 42, said wall is equipped with packing glands 44 that effectively seal the joints between said wall and the branches of the heat transmitting element.

Resting upon the bottom flanges 30 of the casing 25 are the vertical side and end flanges 46 of a bottom wall 41, the edge of said wall adjacent the open side of the casing being flanged downwardly and thence inwardly, as shown at 48, to impart rigidity to said bottom wall throughout the side of the casing that is devoid of a flange corresponding to those designated 30. Resting uponthe bottom wall 41 and extending transversely thereof adjacent each of its ends is a bar 50 whose ends are turned upwardly and inwardly, as shown at 5|, the inwardly turned portions of said ends having holes through which screws 52 pass freely, said screws being threaded through holes in the body portions of the bars 56 and projecting through registering holes in the bottom wall 41, beyond which said screws are pro- 'vided with lock nuts 53. An inverted troughlike cap 54 fits down over the ends of each of the bars 50, for engagement with the ends of the screws 52, and the reservoir 40 bears upon said caps. It is evident from the construction just described that by means of the screws 52 the tank may be elevated until its upper end firmly contacts with the underside of the casing top 26. To remove the reservoir from the casing, the screws 52 are withdrawn; the bars 56 and caps 54 are slid out through the open side of the casing 25, allowing the reservoir to drop onto the bottom wall 41 of the casing, after which the reservoir itself may be bodily removed through the open side of the casing, it being observed, especially from Fig. 5, that the reservoir is slightly less in length than the space between the vertical flange 3| of the casing, the reservoir being of a height slightly less than the distance between the bottom wall 41 and the lower edge of the peripheral flange of the top 26. The act of withdrawing the reservoir 4|] from the casing 25 presupposes, of course, that the casing has been removed from the stove structure so that access is had to its open side.

The casing 25 is attached to the stove by a member 55, a fragmentary perspective of which constitutes Fig. '7. This member 55 is in the nature of a channel, one side flange 56 of which is higher than the other and at its ends is turned inwardly and thence in a plane parallel to its body portion to provide lugs 51, each having an aperture 58. The lower edge of each lug and the part connecting the lug to the body portion of the flange .56 is cut away a distance above the plane of the web 59 of the channel member so that the member may be engaged upwardly about the inturned lower edge of the peripheral flange of the stove top 6 and the lugs 51 engaged with the inner side of said flange, as indicated in Figs. 1, 2 and 3. Bolts, one of which is shown at 66 in Fig. 2, pass through the apertures 58 of the lugs 5'! and'through aligned holes in the flange of the stove top and secure the channel member in place. The adjacent flange of the casing top 26 is engaged within the channel member and is held thereby in contact with the stove top flange. A bracket 6 I, applied to the end panel I4 of the stove forms a further support for the casing 25.

The heat absorbing end 2 of the element I is disposed directly above the drum of a burner I0, such burner, in the embodiment herein illustrated, being of the well known commingling tube type. Said end 2 of the element I is thus placed within the zone of intense heat of the combustion device or, in other words, practically within the products of combustion of the burner, the same also being in close proximity to the solid section 5 of the stove top immediately beyond the edge of the opening I. The heat absorbing capacity of the top section 5 increases the intensity of the heat about the part 2 of the element I, after the burner has been in operation for a short time, and this is lessened to no material degree when the lid 8 is removed from the opening I and a vessel is placed over said opening. With the burner in operation, heat is conducted from the end 2 of the element I downwardly into the water within the reservoir 46 which surrounds the branches 3 of the element, the water becoming hot enough in a relatively short time to serve all kitchen needs, as for dish washing purposes and the like.

To prevent oxidization of the heat absorbing end of the element I, due to its being subjected to the intense heat of the products of combustion, such end may be given a protective coating of suitable material, such as a plating of chromium.

Fig. 9 shows a modified form of the invention in which the reservoir 65 is connected directly to the stove structure in much the same way as the previously described casing 25 is attached to the stove, and a heat transmitting element 66, constructed of a relatively heavy plate of copper or the like, is substituted for the element I. The plate from which the element 66 is formed has its heat absorbing end 6! turned-at right angles to its heat delivery end 68, the latter being intimately connected to the adjacent side wall of the reservoir 65, as by welding, riveting, or the like. The heat absorbing end 61 has a relatively large opening 69 for the passage of the products of combustion from the burner Ill. As in the former case, the end panel I 4 of the stove has an opening for the passage of the heat absorbing end of the element 66.

In the modification illustrated in Figs. 11 and 12, the side of the resorvoir Ill adjacent the stove structure is extended through an opening "II in the end panel I4 and rests upon an inturned flange III at the bottom of said opening, the bottom of the reservoir being provided with a stop I2 that engages the end panel. The upper end of the reservoir is shown as bound to the stove structure by a strap I3. A spout I4 rises from a horizontal wall portion I5 of the reservoir beneath the stove top, and heat conducting elements I6, in the form of relatively heavy bars of copper or the like, that are attached to the solid section 5 of the stove top, depend through said spout and into the contents of the reservoir. In this case the portion of said top section above the burner IU' constitutes, in effect, the heat absorbing end of the heat transmitting element, the lower ends of the bars 16 forming the heat .delivery end thereof.

As shown in Fig. 13, which illustrates a further modification, a heavy plate 11 may be substituted for the bars 16, just described. In other respects, the twoforms of the invention last described may be the same. 7

Having thus described our invention, what we claim is:

1. In combination, a combustion device including a part that becomes highly heated in the normal operation of the device, a reservoir alongside the combustion device, the same having an open top and a laterally oifset portion on the side adjacent the combustion device thereby to provide a horizontal wall that is a substantial distance below the open top of the reservoir, said wall having an opening surrounded by an upstanding spout that terminates at its upper end near the plane of said open top, and a heat transmitter having a heat absorbing portion thermally connected to the aforesaid part of the combustion device and a heat delivering portion depending through the aforesaid spout into the interior of the reservoir, the same serving to transmit heat solely by conduction to a liquid in the reservoir.

2. In combination, a combustion device, a reservoir alongside thereof, and a heat transmitting element formed of a bar of heat conducting material to provide, of its central portion, a ringlike part that is disposed above the combustion device and, of its end po-rtions,.heat delivering branches that depend into the contents of the reservoir.

3. In combination, a combustion device, a reservoir alongside thereof, the same having an open top and a laterally oifset portion on the side adjacent the combustion device thereby to provide a substantially horizontal wall that is below the open top of the reservoir, and a heat transmitting element formed of a bar of heat conducting material to provide, of its central portion, a ring-like part that is disposed above the combustion device and, of its end portions, heat delivering branches that depend through openings in said wall and into the contents of the reservoir.

4. In combination, a stove structure incorporating a combustion device, a reservoir supported adjacent said stove structure and thermally remote from said device, and a heat transmitt ng element for conveying heat solely by conduction and having a part in heat receiving relation to the combustion device and another part in heat delivering relation to the reservoir.

5. In combination, a stove structure including a combustion device, a reservoir supported by said structure to one side of and thermally remote from the combustion device, and means for transmitting heat solely by conduction, the same having a part in heat receiving relation to the combustion device and a part in intimate heat exchanging relation tothe contents of the reservoir.

6. In combination, a stove structure comprising a top, a panel depending therefrom, and a combustion device alongside said panel and beneath the top, a reservoir supported. by the stove structure outwardly beyond said panel and thermally remote from the combustion device, and a heat transmitting element that transmits heat solely by conduction having a part in heat. receiving relation to the combustion device andwardly of the panel, a casing attached to the stove structure on the outer side of said panel below the plane of said top, a reservoir housed therein, and a heat transmitting element that transmits heat solely by conduction having a part inheat receiving relation to the combustion device and another part extended laterally and downwardly therefrom in intimate heat exchanging relation to the contents of the reservoir.

8. In combination, a stove structure comprising a top, a panel depending therefrom, and a burner situated below the stove top inwardly of said panel, a casing detachably connected to the stove structure outside said panel and having an open side adjacent the same, a reservoir housed within the casing and adapted to be passed through the open side thereof, and a heat transmitting element having a part in heat re ceiving relation to the burner and another part extended through the plane of the panel and arranged in intimate heat exchanging relation to the contents of the reservoir.

9. In combination, a stove structure comprising a top, a panel depending therefrom, and a burner situated below the top inwardly of said panel, a casing supported by the stove structure on the outer side of said panel, the same being open on its side adjacent the panel and including an open top having a peripheral flange, a reservoir housed within the casing and adapted to be emplaced therein and removed therefrom through the aforesaid open side, means for sustaining the reservoir within the casing with its upper end contiguous to the casing top about the opening of the latter, means detachably connecting the casing to the stove structure, and a heat transmitting element having a heat absorbing part in operative relation to the burner and a part extended through the plane of the aforesaid panel and arranged in intimate heat exchanging relation to the contents of the reservoir.

10. In combination, a stove structure comprising a top, and a burner situated below said top, the top incorporating a section above the burner that is of relatively high heat absorbing capacity, a reservoir supported adjacent the stove structure below the plane of said top, and a heat transmitting element that transmits heat solely by conduction having a heat receiving part in operative relation to the burner and in juxtaposition to the heat absorbing section of the stove top, and a part below the former part arranged in intimate heat exchanging relation to the contents of the reservoir.

11. In combination, a stove structure comprising a top, a panel depending therefrom, and a burner situated on the inner side of said panel of the aforesaid panel below the plane of the stove top, and a heat transmitting element that transmits heat solely by conduction having a heat receiving part in operative relation to the burner and in juxtaposition to the heat absorbing section of the stove top, and a part extended through the plane of the panel and downwardly and arranged in intimate heat exchanging relation to the contents of the reservoir.

12. In combination, a stove structure comprising a top having a relatively high heat absorbing capacity, a burner arranged to discharge its products immediately below said top, a reservoir supported adjacent the stove structure below the plane of the top, and a heat transmitting element that transmits heat solely by conduction having a heat receiving part situated between the discharge end of the burner and said top and another part extended laterally and downwardly from the former part and arranged in intimate heat exchanging relation to the contents of the reservoir.

13. In combination, a stove structure comprising a top, and a burner situated below said top; a reservoir supported adjacent the stove structure, the stove top in the region of the burner having a relatively high heat absorbing capacity, and means for transmitting heat by conduction, the same having a part in intimate heat exchanging relation to the heat absorbing portion of the stove top and a part in intimate heat exchanging relation to the contents of the reservoir.

14. In combination, a stove structure comprising a top, a panel depending therefrom, and a burner situated below said top and inwardly of the panel, a reservoir supported by the stove structure on the outer side of said panel, the stove top in the region of the burner having a relatively high heat absorbing capacity, and means for transmitting heat by conduction, the same having a part in intimate heat exchanging relation to the heat absorbing portion of the stove top and a part in intimate heat exchanging relation to the contents of the reservoir.

15. In combination, a stove comprising a burner, and a top above said burner having a relatively high heat absorbing capacity, a reservoir alongside the burner, and means for transmitting heat by conduction, the same having a part in intimate heat exchanging relation to said top and a part in similar relation to the contents of the reservoir.

16. In combination, a stove including a burner and a top thereabove having a relatively high heat absorbing capacity, a reservoir alongside the burner, and heat conducting means joined to said top and depending into the reservoir.

17. In combination, a stove comprising a top, a panel depending therefrom, and a burner situated beneath said top inwardly of said panel, the top including a section having a relatively high heat absorbing capacity and extending laterally beyond the vertical plane of the burner toward said panel, the panel having an opening, a reservoir supported with its major portion outwardly beyond said panel and projecting through the opening thereof below said section of the stove top, and heat conducting means depending from said section of the top into the adjacent side of the reservoir.

18. A stove comprising a top and a fluid fuel burner arranged to discharge its products of combustion immediately below said top, a reservoir supported below the plane of the top and to one side of and thermally remote from said burner, and means 'for transmitting heat solely by conduction having a heat absorbing part subjected to the intense heat of the products of combustion and a heat delivering part extended laterally and downwardly therefrom and arranged in-intimat'e heat exchanging relation to the contents of the reservoir.

19. A stove structure comprising a water reservoir and a cooking surface, a fluid fuel burner below the cooking surface and adapted to supply heat thereto, and a heat conductor arranged to intercept part of the heat passing from the burner to the cooking surface and carry it by conduction to the water in the reservoir.

20. A stove structure comprising a water reservoir and a cooking surface, a burner below the cooking surface and adapted to supply heat thereto, and a heat conductor having one end above the burner in heat-absorbing relation thereto and the other end depending into the reservoir, whereby the water in the reservoir is heated by conduction of heat from said burner through said heat conductor.

21. A stove structure comprising a water reservoir and a cooking surface, a burner below the cooking surface and adapted to supply heat thereto, and a heat conductor having one end in heatabsorbing relation to the burner and the other end depending into the reservoir, whereby the water in the reservoir is heated entirely by conduction of heat from said burner through said heat conductor.

22. A stove structure comprising a water reservoir and a cooking surface, a fluid fuel burner below the cooking surface and adapted to supply heat thereto, and a heat conductor having a portion surrounding the top of the burner in heatabsorbing relation thereto and another portion depending into the reservoir, whereby the water in the reservoir is heated by conduction of heat from said burner through said heat conductor.

23. A stove structure comprising a water reservoir, a burner, and a heat conductor having one end above the burner in heat-absorbing relation thereto and the other end depending into the reservoir, and a heating plate located above the heat conductor adapted to absorb part of the heat from the burner for cooking purposes and to reflect part of the heat onto the heat conductor to aid in heating the water in the reservoir.

24. A stove structure comprising a water reservoir, a burner, and a heat conducting element that transmits heat solely by conduction having one of its ends above the burner in heat absorbing relation thereto and its other end in heat exchanging relation to the contents of the reservoir, and a heating plate located above the heat conducting element adapted to absorb part of the heat from the burner for cooking purposes and to reflect part of the heat onto the heat conducting element to aid in heating the water in the reservoir.

LEE S. CHADWICK. CHARLES J. KESSLER. MARC RESEK. 

